Machine for spinning artificial silk



Sept-27, 1932- G. BAURIEDEL ET AL MACHINE FORSPINNING ARTIFICIAL SILK Filed Sept. 17. 1928 Wa/XJBWM Hm Jnverzfars Patented Sept. 27, 1932 UNITED STATES GOTTHARD BAURIEDEL AND AUGUST HARTM-ANN,. OEiBARMEN, GERMANY, ASSIGNORS TO THE FIRM: AMERICAN BEMBERG CORPORATION OF. NEW YORK, 1

MACHINE roe srmnnve AnrIrrcrAr. SILK Application filed September 17, 1928, Serial No..3( )6,518, and in'G'erinany September 21, 1927.

This invention relates to improvements in machines for spinning artificial silk, and particularly to those employing centrifuges and intended for carrying out the cuprammonium 5 stretch spinning process.

In those machines which are usually employed for carrying out the viscose spinning process, the spinning devices and spinning baths are arranged in front of the machine,

whilst a driven drawing roller, to convey the threads further and to introduce them into the spinning centrifuges disposed vertically below and behind the spinning baths, is disposed obliquely above the spinning devices and baths. This arrangement has been approved of in the viscose process and is employed to the greatest extent. A machine having its individual parts arranged in a similar manner and employing centrifuges, but

adapted to carry out the cuprammonium stretch spinning process, has, however, proved to be unsuitable and is also difficult to attend to. If now the so-called spinning funnels, which in the present case serve as the spin ning devices, and which are of a considerable size, are disposed right at the front of the machine, it is difficult or practically impossible to handle freely the spinning centrifuges disposed behind, and it is also difficult to gain access to the acidifying devices and drawingofi devices which of necessity lie between the spinning devices and the centrifuges. Free access, however, to the machine is indispensable for attending to the machine, that is for the introduction of the thread into and for exchanging the full centrifuges. The machine can be attended to more easily if the centrifuges are placed obliquely below the spinning apparatus. The handling of the spinning funnels is then, however, diflicult, and moreover a uniform drawing-off of the threads cannot be effected by maintaining the usual drawing-off arrangements.

The object of the present invention is to provide a machine which is suitable for the requirements above-mentioned.

According to the present invention, a machine for spinning artificial silk by the cuprammonium stretch spinning process and employing centrifuges is provided with spinning' devices arranged in an easily accessible manner on one side" of the machine, whilst the rollers for guiding, drawing-oil and stretching the threads and the spinning centrifuges are disposed on ,the other side. The threads arethus; conducted from one side of the ma chine to: the other. The usualacidifying devices may be disposed between the spinning devices and the centrifuges, as well as a pair of drawing ofl rollers which give the required. direction of travel to the threads. Both of these rollers may be allowed to run at once at the same peripheral speed in order to ensurethat the thread isboth drawn off uniformly and against an increased tension. The roller which actually guides thethread to the centrifuge may, however, also be a1- lowed to run more quickly than the first roller in order to give av further additional stretch to the thread on'its way from the first to tl iesec'ond rollers. The rollers may also be arranged'at an angle to one another so. that the machine may be constructed more compactly, and in this nr'annerthe stretching of theitliread in a transverse direction isredanced. Ar guiding device may. be disposed below the spinning apparatus in order to conduct the thread into-an acid bath from which the; thread passes on to the drawing-off and stretching rollers, the latter being adapted to conduct the thread in a substantially vertical direction into the centre of the centrifuge lying below; If desired, the first drawing-off roller may rotate directly in the acid bath. One form of construction is illustrated by way of eX-amplein the accompanying drawing wherein the figure shows diagrammatically in end elevation the most important individual parts of a machine in accordance with the invention. 7

The freshly spun thread is conducted from the spinning apparatus 1 to the guide rod 2 and then passes to the acid bath3. It is then seized by the drawing-off roller 4 which imparts to it the necessary tension for stretching. The thread is then led further over the drawing roller 5 disposed above and which conducts it further, or again tensions and stretches it, the roller 5 being so arranged that the thread is conducted vertically I00 through the leading-in funnel 6 on the spinning centrifuge 7. The rollers 4 and 5 are driven at an adjustable speed. The fact that the axis of the roller 5 is arranged vertically to the axis of the roller 4 avoids the necessity to arrange the centrifuges farther outside a distance equal to the diameter of the roller 5. In the ordinary way, after leaving the acid bath 3, the stretching of the threads is completed. If, however, the threadsare plastic enough, the stretching may be also still continued behind the roller 4:, and for this purpose the rollers 5 would be allowed to run faster than the rollers 4. v

The advantage of the machine constructed in accordance with the invention consists in the fact that it presents easy accessibility to the important individual parts. The spinning apparatus may be observed and attended to easily on the one side, while the spinning centrifuges and their driving devices are also particularly easy of access on the other side. The handling of the drawing-off rollers is also facilitated as well as the imposing of the threads on and cleaning of the rollers.

It will be seen that in the drawing an end view of the spinning frame or machine is disclosed. Throughout the length of the machine or frame a plurality of spinning units identical to the one shown, are placed.

'Having thus described our said invention, what we claim as new and desire to secure by Letters Patent is A machine for spinning artificial silk by the cuprammonium stretch-spinning process, comprising a spinning frame havlng spinning apparatus arranged on one side thereof,

a leading and draw-off roller, a leading and stretching roller, and a collecting means associated with said spinning apparatus, and positioned on the side of the said spinning frame opposite to that side where, said spinning apparatus is positioned, said two rollers being arranged one above the other in a vertical I plane parallel to the length of the said spinning frame, and adapted to rotate in planes perpendicular to one another.

In testimony whereof we have aflixed our slgnatures.

- GOTTHARD BAURIEDEL.

AUGUST HARTMANN. 

